Microbio - UTIs Flashcards

1
Q

Define uncomplicated UTI

A

Infection of the urinary tract without any structural or functional abnormality

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

Define complicated UTI

A

infection of the urinary tract with functional or structural abnormalities

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Complicated UTI is generally an infection in which kind of patients?

A

Male
pregnant
Indwelling catheters
Children

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

Prevalence of bacteriuria in young non-pregnant women?

A

1-3%

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

List the 4 most common bacterial causes of UTI

A

E. Coli
Staph. Saprophyticus
Proteus
Klebsiella

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Clinical features of lower UTI in diff patients?

A

Generally: dysuria, frequency, urgency, haematuria

Children - vague (fever, irritability, vomiting)

Elderly - asymptomatic

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

Clinical features of pyelonephritis

A

Fever
Rigors
Flank pain

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Gram +ve, coagulase -ve, UTI

  • name 2 common causes
A

S. Saprophyticus

S. Epidermis (prostheses)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Extra renal causes of urinary tract obstruction

A

BPH, Calculi

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Intrarenal causes of urinary tract obstruction

A

PCKD
SCD
Hypokalemic nephropathy?!

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Neurogenic causes of renal tract obstruction

A

Poliomyelitis
Diabetic neuropathy
Spinal cord injury

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Haematogenous route of UTI - what tends to cause this?

A

S. aureus bacteremia or endocarditis

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

If urine dip shows +ve leukocytes alone, what step should you take next?

A

Urine culture

Treat if severe Sx

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

what culture result is diagnostic of UTI?

^exception to this rule?

A

Culture of single organisms >10^4 colony forming units/mL

Accept lower number if E.Coli or S. saprophyticus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Urine microscopy - which cells, if you saw them, would be indicative of sample contamination

A

squamous epithelial cells

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Causes of sterile pyuria = WBCs presentand nothing on culture

A

Prior treatment with Abx = top cause

calculi
catheterisation
bladder ca
TB or STD (not grown in normal culture)

17
Q

Tx of pyelonephritis

A

Coamoxiclav

18
Q

Uncomplicated UTI in female - tx?

A

Cephalexin or nitrofurantoin

19
Q

UTI in man - Tx?

A

Cephalexin or ciprofloxacin

20
Q

Catheter associated UTI - tx?

A

Gentamicin or amikacin

21
Q

In whom would you consider a 7 day abx course for uncomplicated lower UTI ? list 3

A
  1. Men
  2. previous UTI with resistant organism
  3. > 7 days of Sx
22
Q

Candida UTI - main cause?

A

Indwelling catheter

23
Q

Complications of pyelonephritis - state 4

A

Chronic pyelonephritis
Abscess
Acute papillary necrosis
Septic shock